I'm doing a paper about HTML and I want to talk about how HTML syntax evolved from being awith no constraints and then how DTDs where introduced but it was a mess so XHTML came to solve this problem but it couldnt so finally HTML5 came to live with the problem. I've been searching for 3 days now and I couldn't find any sources about this topic. I hope anyone can lead me to a place where i can find some information or anything related.
Sorry if this is no the correct place to ask this question.
Thanks in advance